package com.it.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.it.reggie.common.R;
import com.it.reggie.dto.SetmealDto;
import com.it.reggie.entity.Category;
import com.it.reggie.entity.Setmeal;
import com.it.reggie.service.CategoryService;
import com.it.reggie.service.SetmealDishService;
import com.it.reggie.service.SetmealService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.stream.Collectors;

@Slf4j
@RestController
@RequestMapping("setmeal")
public class SetmealController {

    @Autowired
    private SetmealService setmealService;

    @Autowired
    private SetmealDishService setmealDishService;

    @Autowired
    private CategoryService categoryService;

    /**
     * 新增套餐
     * @param setmealDto
     * @return
     *  提交过来的JSON数据记得在参数前面加@RequestBody
     */
    @PostMapping
    @CacheEvict(value = "setmealCache",allEntries = true)// 清除setmealCache下面所有的缓存数据
    public R<String> save(@RequestBody SetmealDto setmealDto) {
        log.info("套餐信息：{}",setmealDto);

        setmealService.saveWithDish(setmealDto);

        return R.success("新增套餐成功");
    }


    /**
     * 套餐分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name) {
        // 分页构造器对象
        Page<Setmeal> pageInfo = new Page<>(page, pageSize);
        Page<SetmealDto> dtoPage = new Page<>();

        // 条件构造器
        LambdaQueryWrapper<Setmeal> queryWrapper = new LambdaQueryWrapper<>();
        // 添加查询条件，根据name进行like模糊查询
        queryWrapper.like(name != null,Setmeal::getName,name);
        // 添加排序条件，根据更新时间进行降序排列
        queryWrapper.orderByDesc(Setmeal::getUpdateTime);

        // 调用Service
        setmealService.page(pageInfo,queryWrapper);

        // 对象拷贝 records记录的所有数据
        BeanUtils.copyProperties(pageInfo,dtoPage,"records");
        List<Setmeal> records = pageInfo.getRecords();
        List<SetmealDto> list = records.stream().map((item) -> {
            SetmealDto setmealDto = new SetmealDto();
            // 对象拷贝
            BeanUtils.copyProperties(item,setmealDto);
            // 分类ID
            Long categoryId = item.getCategoryId();
            // 根据分类ID查询分类对象
            Category category = categoryService.getById(categoryId);
            if (category != null) {
                // 分类名称
                String categoryName = category.getName();
                setmealDto.setCategoryName(categoryName);
            }
            return setmealDto;
        }).collect(Collectors.toList());

        // 将上面list获取到的数据设置到dtoPage的Reccords上
        dtoPage.setRecords(list);

        return R.success(dtoPage);
    }


    /**
     * 删除套餐
     * @param ids
     * @return
     * @RequestParam 接收多个参数
     * allEntries = true清除所有的数据
     */
    @DeleteMapping
    @CacheEvict(value = "setmealCache",allEntries = true)// 清除setmealCache下面所有的缓存数据
    public R<String> delete(@RequestParam List<Long> ids) {
        log.info("ids：{}",ids);

        setmealService.removeWithDish(ids);

        return R.success("套餐数据删除成功");
    }


    /**
     * 根据条件查询套餐数据
     * @Cacheable 缓存注解
     * @param setmeal
     * @return
     */
    @GetMapping("/list")
    @Cacheable(value = "setmealCache",key = "#setmeal.categoryId + '_' +#setmeal.status")
    public R<List<Setmeal>> List(Setmeal setmeal) {
        // 构造条件构造器
        LambdaQueryWrapper<Setmeal> queryWrapper = new LambdaQueryWrapper<>();
        // SQL: select * from setmeal where CategoryId = ? and Status = ? order by UpdateTime desc
        queryWrapper.eq(setmeal.getCategoryId() != null,Setmeal::getCategoryId,setmeal.getCategoryId());
        queryWrapper.eq(setmeal.getStatus() != null,Setmeal::getStatus,setmeal.getStatus());
        queryWrapper.orderByDesc(Setmeal::getUpdateTime);

        // 调用Service
        List<Setmeal> list = setmealService.list(queryWrapper);

        return R.success(list);
    }
}
